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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 單秋成(Chow-Shing Shin) | |
| dc.contributor.author | Yu-Shu Lin | en |
| dc.contributor.author | 林毓書 | zh_TW |
| dc.date.accessioned | 2021-05-20T21:37:50Z | - |
| dc.date.available | 2013-08-20 | |
| dc.date.available | 2021-05-20T21:37:50Z | - |
| dc.date.copyright | 2010-08-20 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-08-13 | |
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Beevers, “Fatigue Crack Closure in Titanium and Titanium Alloy, ” International Journal of Fracture, Vol. 9, pp.105–108, 1983. [29] W.R. Corwin and G.E. Lucas, “The Use of Small-scale Specimen for Testing Irradiated Material,” ASTM STP888, American Society for Testing and Material, Albuquerque, 1983. [30] W.R. Corwin, F.M. Haggag, W.L. Server, Eds, “Small Specimen Test Techniques Applied to Nuclear Reactor Vessel Thermal Annealing and Plate Life Extension,” ASTM STP1204, American Society for Testing and Material, New Orleans, 1993. [31] W.R. Corwin, S.T. Rosinski, and E.V. Walle, Eds. “Small Specimen Test Technique,” ASTM STP1229, American Society for Testing and Material, New Orleans, 1997. [32] J.F. Kalthoff and M. Gregor, “Instrumented Impact Testing of Subsize Charpy V-notch Specimens,” Small Specimen Test Techniques, ASTM STP 1329, American Society for Testing and Material, pp.98–109, 1998. [33] D.J. Alexander, “Fracture Toughness Measurements with Subsize Disk Compact Specimens,” Small Specimen Test Techniques Applied to Nuclear Reactor Vessel Thermal annealing and Plant Life Extension, ASTM STP 1204, American Society for Testing and Material, pp.130–142, 1993. [34] T.S. Yun, J.S. Kim, S.H. Chi, and J.H. Hong, “Effect of Specimen Thickness on The Tensile Deformation Properties of SA508 C1.3 Reactor Pressure Vessel Steel,” Small Specimen Test Techniques, ASTM STP 1329, American Society for Testing and Material, pp.575–587, 1998. [35] S. Nunomura, T. Nishijima, Y. Higo, and A. Hishinuma, “Evaluation of Tensile Properties Using a TEM Disk-size Specimen,” Applied to Nuclear Reactor Vessel Thermal annealing and Plant Life Extension, ASTM STP1204, American Society for Testing and Material, pp.256–266, 1993. [36] F.M. Haggag, W.L. Server, G.E. Lucas, G.E. Odette, and J.W. Sheckherd, “The Use of Miniaturized Tests to Predict Flow Properties and Estimate Fracture Toughness in Deformed Steel Plates,” Journal of Testing and Evaluation, JTEVA, Vol1, No.1, pp.62–69, 1990. [37] T. Misawa, T. Adaci, M. Saito, and Y. Hamaguchi, “Small Punch Tests for Evaluating Ductile-brittle Transition Behavior of Irradiated Ferritic Steels,” Journal of Nuclear Material, Vol.150, pp.1619–1622, 1989. [38] G.R. Rao and B.A. Chin, “Development of a Miniature Disk Bending Fatigue Specimen,” Small Specimen Test Techniques Applied to Nuclear Reactor Vessel Thermal annealing and Plant Life Extension, ASTM STP 1204, American Society for Testing and Material, pp.267–274, 1993. [39] S. Nunomura, S. Noguchi, Y. Okamura, S. Kumai, and S. Jitsukawa, “Two Micro Fatigue Test Methods for Irradiated Materials,” Small Specimen Test Techniques Applied to Nuclear Reactor Vessel Thermal annealing and Plant Life Extension, ASTM STP 1204, American Society for Testing and Material, pp.275–288, 1993. [40] 林士瑋, “利用微型平板試片探討疲勞性質,” 碩士論文, 台灣大學機械工程研究所, 2008. [41] 中國國家標準CNS 2112 G 2014─金屬材料拉伸試驗試片. [42] “Standard Test Method for Measurement of Fatigue Crack Growth Rates,” ASTM E647-95a, Annual Book of ASTM Standards, Vol. 3.01, American Society for Testing and Materials, Philadelphia, USA, pp. 562–598, 1998. [43] J.W. Dally,W.F. Riley,“Experimental Stress Analysis,” Third Edition, pp.97–100, 1999. [44] L.P. Pook, “The Effect of Friction on Pin Jointed Single Edge Notch Fracture Toughness Test Specimens,” International Journal of Fracture Mechanics, Vol. 4, pp.295–297, 1968. [45] Harris, “Stress Intensity Factors for Hollow Circumferentially Notched Round Bars, ” Journal of Basic Engineering, pp.49–54, 1967. [46] S. Suresh and R. O. Ritchie, “On the Influence of Environment on the Load Ratio Dependence of Fatigue Thresholds in Pressure Vessel Steel,” Engineering Fracture Mechanics, Vol. 18, pp. 785–800, 1983. [47] K. Komai and K. Minoshima, “Dynamic and Cyclic Stress Corrosion Cracking Resistance of Metals,” Edited by K. Iida and A. J. McEvily, Elsevier Applied Science, New York, pp. 373–389, 1986. [48] C. T. Fujii and J. A. Smith, “Environmental Influences on the Aqueous Fatigue Crack Growth Rates of HY-130 Steel,” ASTM STP 801, Edited by T. W. Crooker and B. N. Leis, American Society for Testing and Materials, Philadelphia, pp. 390–402, 1983. [49] 徐森煌, “304不鏽鋼疲勞裂縫之減速現象,” 碩士論文, 台灣大學機械工程研究所, 1991. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/10541 | - |
| dc.description.abstract | 鋁合金2024-T3為目前廣泛使用的航太材料，優點為高強度、質輕，但具有低抗蝕性；本文乃以行政院飛航安全委員會調查之「機腹蒙皮77公分裂紋事故」為案例研究，探討「腐蝕」對於飛機蒙皮材料2024-T3鋁合金之材料機械性質的影響。實驗分別針對腐蝕的破壞機制：靜態腐蝕、應力腐蝕以及腐蝕疲勞進行實驗。在靜態腐蝕實驗中，會將蒙皮材料製作成標準拉伸試片，並透過設定不同的環境參數，將試片浸泡於各腐蝕環境參數中，而後對試片進行拉伸實驗求取其相對應的應力應變曲線，檢視腐蝕是否會對試片造成機械性質的改變，並探討各環境因素對蒙皮材料的強度影響程度。在應力腐蝕實驗中，由前述的環境因素加上固定的張應力，探討施加應力對於腐蝕破壞的影響。腐蝕疲勞的部份中，則是將蒙皮製做成標準疲勞試片以及微型疲勞試片，透過觀察裂縫生長，比較蒙皮在空氣中以及腐蝕環境中之裂縫生長速率的差異性，並比較標準疲勞試片與微型疲勞試片所反映出的數據結果之異同，以研究微型疲勞試驗機用於疲勞測試的可行性。 | zh_TW |
| dc.description.abstract | 2024-T3 Aluminum alloy is a wildly-used material in aerospace, for it’s high strength and low density, but with a low-corrosive resistance. This study tries to find out the effects on mechanical properties of 2024-T3 Aluminum alloy due to corrosion, which is based on an accident “ CI 7552-77cm crack accident” investigated by Aviation Safety Council (ASC) . This experiment is separated into three parts: static corrosion, stress corrosion cracking and corrosion fatigue. In static corrosion, we prepare tensile specimens which are exposed to different corrosive environments, then construct the relative stress-strain curve after tensile test to check whether the tensile strength changes due to corrosion, and discuss how it has changed for different environment factors. In stress corrosion cracking, we introduce the “tensile stress” factor in addition to the previous corrosive environments, discuss the effects on mechanical properties under corrosive environments when the tensile stress is added. In corrosion fatigue, we prepare standard CT specimens and miniature fatigue specimens, then through observing the crack grows, compare the difference in crack growth rate between non-corrosive environments and corrosive environments, and compare the results between CT specimens and miniature specimens, as well, for checking the usage and practicability of miniature fatigue specimen testing. | en |
| dc.description.provenance | Made available in DSpace on 2021-05-20T21:37:50Z (GMT). No. of bitstreams: 1 ntu-99-R97522521-1.pdf: 19896716 bytes, checksum: 63ac1cf536d1adcfa1805edbf68622a9 (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | 口試委員審定書 i
誌謝 ii 摘要 iii Abstract iv 目錄 v 圖目錄 vii 表目錄 x 第一章 緒論 1 1.1 前言 1 1.2 飛航事故簡介 1 1.3 研究目的 3 第二章 文獻回顧 9 2.1 腐蝕破壞機制 9 2.1.1 孔蝕（Pitting） 9 2.1.2 應力腐蝕（Stress Corrosion Cracking） 10 2.1.3 腐蝕疲勞（Corrosion Fatigue） 10 2.2 疲勞破壞文獻回顧 11 2.2.1 應力強度因子 11 2.2.2 Paris’ Law 12 2.2.3 裂縫封閉效應 13 2.2.4 Elber修正式 14 2.2.5 量測裂縫封閉 14 2.3 縮小試片尺寸的技術 15 第三章 實驗方法與程序 21 3.1 靜態腐蝕實驗 21 3.1.1 標準拉伸試片 21 3.1.2 靜態腐蝕環境參數設定 21 3.1.3 靜態腐蝕實驗設備與流程 22 3.2 應力腐蝕實驗 23 3.2.1 應力腐蝕試片與夾具 24 3.2.2 應力腐蝕環境參數設定 24 3.2.3 應力腐蝕實驗設備與流程 24 3.3 CT試片腐蝕疲勞實驗 25 3.3.1 疲勞CT試片 25 3.3.2 CT疲勞試片K值估算 26 3.3.3 CT試片腐蝕疲勞環境參數設定 26 3.3.4 CT試片腐蝕疲勞實驗設備與流程 27 3.4 微型試片腐蝕疲勞實驗 29 3.4.1 微型試片 29 3.4.2 微型疲勞試片K值估算 29 3.4.3 微型試片腐蝕疲勞實驗設備與流程 30 3.5 腐蝕試片SEM斷面觀察 31 第四章 實驗結果與討論 48 4.1 靜態腐蝕實驗結果討論 48 4.1.1 氯離子濃度影響 48 4.1.2 酸鹼度影響 49 4.1.3 溫度影響 49 4.1.4 時間影響 49 4.1.5 靜態腐蝕實驗結論 50 4.1.6 靜態腐蝕拉伸試片破斷處表面觀察 50 4.2 應力腐蝕實驗結果討論 51 4.2.1 應力腐蝕拉伸結果討論 51 4.2.2 應力腐蝕拉伸試片破斷處表面觀察 52 4.3 CT試片腐蝕疲勞實驗結果討論 52 4.3.1 CT試片腐蝕疲勞氯離子濃度對裂縫生長速率影響 53 4.3.2 CT試片腐蝕疲勞酸鹼度對裂縫生長速率影響 53 4.4 微型試片腐蝕疲勞實驗結果討論 54 4.4.1 微型試片腐蝕疲勞氯離子濃度對裂縫生長速率影響 55 4.4.2 微型試片腐蝕疲勞酸鹼度對裂縫生長速率影響 55 4.5 腐蝕試片SEM斷面觀察結果 56 4.6 CT試片與微型試片腐蝕疲勞實驗結果比較 57 第五章 結論 91 參考文獻 94 附錄A 靜態腐蝕各參數試片實驗結果 98 附錄B 靜態腐蝕各參數實驗數據表格 118 | |
| dc.language.iso | zh-TW | |
| dc.title | 腐蝕對2024鋁合金之機械性質影響 | zh_TW |
| dc.title | The Effects On Mechanical Properties of 2024 Aluminum Alloy Due To Corrosion | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 莊禮彰(Li-Chang Chuang),黃庭彬(Tyng-Bin Huang) | |
| dc.subject.keyword | 鋁合金2024-T3,應力腐蝕,腐蝕疲勞,疲勞裂縫生長,微型疲勞試片, | zh_TW |
| dc.subject.keyword | 2024-T3 Aluminum,Stress Corrosion Cracking,Corrosion Fatigue,fatigue crack growth,miniature fatigue specimens, | en |
| dc.relation.page | 137 | |
| dc.rights.note | 同意授權(全球公開) | |
| dc.date.accepted | 2010-08-15 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
| 顯示於系所單位： | 機械工程學系 | |
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